reset upstream subtrees to yocto 2.6

Reset the following subtrees on thud HEAD:

  poky: 87e3a9739d
  meta-openembedded: 6094ae18c8
  meta-security: 31dc4e7532
  meta-raspberrypi: a48743dc36
  meta-xilinx: c42016e2e6

Also re-apply backports that didn't make it into thud:
  poky:
    17726d0 systemd-systemctl-native: handle Install wildcards

  meta-openembedded:
    4321a5d libtinyxml2: update to 7.0.1
    042f0a3 libcereal: Add native and nativesdk classes
    e23284f libcereal: Allow empty package
    030e8d4 rsyslog: curl-less build with fmhttp PACKAGECONFIG
    179a1b9 gtest: update to 1.8.1

Squashed OpenBMC subtree compatibility updates:
  meta-aspeed:
    Brad Bishop (1):
          aspeed: add yocto 2.6 compatibility

  meta-ibm:
    Brad Bishop (1):
          ibm: prepare for yocto 2.6

  meta-ingrasys:
    Brad Bishop (1):
          ingrasys: set layer compatibility to yocto 2.6

  meta-openpower:
    Brad Bishop (1):
          openpower: set layer compatibility to yocto 2.6

  meta-phosphor:
    Brad Bishop (3):
          phosphor: set layer compatibility to thud
          phosphor: libgpg-error: drop patches
          phosphor: react to fitimage artifact rename

    Ed Tanous (4):
          Dropbear: upgrade options for latest upgrade
          yocto2.6: update openssl options
          busybox: remove upstream watchdog patch
          systemd: Rebase CONFIG_CGROUP_BPF patch

Change-Id: I7b1fe71cca880d0372a82d94b5fd785323e3a9e7
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openembedded/meta-oe/recipes-support/multipath-tools/files/0006-multipath-tools-fix-compilation-with-musl-libc.patch b/meta-openembedded/meta-oe/recipes-support/multipath-tools/files/0006-multipath-tools-fix-compilation-with-musl-libc.patch
new file mode 100644
index 0000000..c6fd5b4
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-support/multipath-tools/files/0006-multipath-tools-fix-compilation-with-musl-libc.patch
@@ -0,0 +1,58 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Xose Vazquez Perez <xose.vazquez@gmail.com>
+Date: Fri, 11 May 2018 18:39:44 +0200
+Subject: [PATCH] multipath-tools: fix compilation with musl libc
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+In file included from alias.c:15:
+file.h:9:47: error: unknown type name ‘mode_t’; did you mean ‘time_t’?
+ int ensure_directories_exist(const char *str, mode_t dir_mode);
+                                               ^~~~~~
+                                               time_t
+
+sysfs.c: In function ‘sysfs_is_multipathed’:
+sysfs.c:304:15: error: ‘PATH_MAX’ undeclared (first use in this function); did you mean ‘PATH_UP’?
+  char pathbuf[PATH_MAX];
+               ^~~~~~~~
+               PATH_UP
+
+Cc: Martin Wilck <mwilck@suse.com>
+Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
+Cc: DM ML <dm-devel@redhat.com>
+Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
+Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
+---
+ libmultipath/file.h  | 2 ++
+ libmultipath/sysfs.c | 1 +
+ 2 files changed, 3 insertions(+)
+
+diff --git a/libmultipath/file.h b/libmultipath/file.h
+index 29520c7..3c75c90 100644
+--- a/libmultipath/file.h
++++ b/libmultipath/file.h
+@@ -5,6 +5,8 @@
+ #ifndef _FILE_H
+ #define _FILE_H
+ 
++#include <sys/stat.h>
++
+ #define FILE_TIMEOUT 30
+ int ensure_directories_exist(const char *str, mode_t dir_mode);
+ int open_file(const char *file, int *can_write, const char *header);
+diff --git a/libmultipath/sysfs.c b/libmultipath/sysfs.c
+index ee72e6a..16e0a73 100644
+--- a/libmultipath/sysfs.c
++++ b/libmultipath/sysfs.c
+@@ -28,6 +28,7 @@
+ #include <dirent.h>
+ #include <libudev.h>
+ #include <fnmatch.h>
++#include <limits.h>
+ 
+ #include "checkers.h"
+ #include "vector.h"
+-- 
+2.7.4
+